What is Scratch Testing / Scratch Resistance?
Scratch testing / scratch resistance involves testing the scratch resistance of surfaces in vehicle interiors. The standard assesses how resistant visible surfaces are to scratches caused by fingernails, jewelry, or other objects.
Test Method
Typical Scratch Methods:
• Erichsen Scratch Test: Defined force (0.5–20 N) with steel tip (R = 1 mm)
• Fingernail Simulation: Rounded tip, 3–10 N
• Crockmeter Test: Linear rubbing body, 9 N
Evaluation:
• Visual assessment under standard light D65, scale 1–5
• Gloss change ΔG at 60° (ISO 2813)
• Color difference ΔE* (CIE Lab)
Scratch Testing / Scratch Resistance according to OEM Standards
The following table shows all OEM-specific standards for scratch testing / scratch resistance covered by the ASO Laboratory:
| Manufacturer | Standard | Description |
|---|---|---|
| BMW Group | AA-0134 | Dry Scratch Resistance |
| BMW Group | BN 108-13 | Scratch Resistance |
| BMW Group | GS 97034-9 | Scratch Test |
| Publisher | 7-M0005 | Scratch Resistance |
| Publisher | MBN 10494-5 | Wipe Scratch Resistance, Scratch Resistance |
| Publisher | PA 0015 | Scratch Resistance |
| Jaguar Land Rover | TPJLR.52.004 | Scratch Resistance |
| Stellantis/Opel | KEUR 00824-402 | Scratch Resistance |
| Stellantis/PSA | D45 1047 | Scratch Resistance |
| Volkswagen Group | PR 307.4 | Scratch Sensitivity |
| Volkswagen Group (VW/Audi/Porsche/SEAT/Škoda) | PV 3952 | Scratch Resistance |
| Volkswagen Group (VW/Audi/Porsche/SEAT/Škoda) | PV 3962 | Scratch Resistance Metal Seals |
| Volkswagen Group (VW/Audi/Porsche/SEAT/Škoda) | PV 3987 | Micro-Scratch Resistance |
| Volvo Car Corporation | VCS 1024,31139 | Scratch Resistance (Erichsen) |
| Volvo/Scania | STD 423-0030 | Scratch Resistance |
Frequently Asked Questions about Scratch Testing / Scratch Resistance
How is scratch resistance evaluated?
Typically three-stage: Visual assessment under D65 standard light (scale 1–5), gloss change ΔG at 60° according to ISO 2813, and color difference ΔE* in the CIE Lab color space. Grade 1 = no visible scratch.
Which test forces are used?
Depending on the method: 0.5–20 N for the Erichsen scratch test, 3–10 N for fingernail simulation, 9 N for the Crockmeter. The critical force at which visible scratches appear is documented.
Which surfaces are particularly susceptible to scratches?
High-gloss piano lacquer surfaces and soft-touch coatings. These are most frequently stressed in vehicles (center console, door handles, switches). Grained surfaces are generally more scratch-resistant than smooth ones.
Your Scratch Testing / Scratch Resistance at the ASO Laboratory
The ASO Laboratory performs scratch testing / scratch resistance according to all common OEM standards. Our DAkkS accreditation according to DIN EN ISO/IEC 17025 guarantees standard-compliant results.
Contact us for a quote – we will advise you on optimal sample planning and testing scope.